US3490041A

US3490041A - Electronic fault finding system using acceptable limits testing

Info

Publication number: US3490041A
Application number: US392979A
Authority: US
Inventors: Gustave Shapiro; George J Rogers; Owen B Laug
Original assignee: COMMERCE USA
Current assignee: COMMERCE USA
Priority date: 1964-08-28
Filing date: 1964-08-28
Publication date: 1970-01-13
Anticipated expiration: 1987-01-13

Description

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ELECTRONIC FAULT FINDING SYSTEM USINGv ACCEPTABLE LIMITS TESTING Filed Aug. 28, 1964 24 Sheets-Sheet 1 BEING P0; our TESTED REFERENCE SOURCE TRANSFORM/4 T/0N NETWORK COMPARATOR F" r I MODULE UNDER TEST I 28 I I TRANSFORMATION I NETWORK I l l PIP/ME 50 I l EQU/PMENT SOCKET I J 29 /1 PLUG 55 53 PROBE a INSTRUMENT INVENTORS Gus fave Shapiro Georye Rogers Owen .5. Law/y BY JMQQ 4 ATTORNEY Jan. 13, 1970 s pmo ET AL 3,490,041

ELECTRONIC FAULT FINDING SYSTEM USING ACCEPTABLE LIMITS TESTING 24 Sheets-Sheet 5 Filed Aug. 28, .1964

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ELECTRONIC FAULT FINDING SYSTEM USING ACCEPTABLE LIMITS TESTING Filed Aug. 28, 1964 24 Sheets-Sheet 7 RISE TIME MODULE L Z00 BEING TESTED NE TWORK 204 59 g 211 I [98 4 208 I 55 COMPAR/l T018 f L 40 j i 212 BEING TESTED I TRANSFORMATION 2i 219 NETWORK 2/7 205 fi g 2 (35 COM PA [2 ATOQ Jan. 13, 1970 ELECTRONIC Filed Aug. 28. 1964 3. H P o ET AL 3,490,041

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ELECTRONIC FAULT FINDING SYSTEM USING ACCEPTABLE LIMITS TESTING Filed Aug. 28. 1964 24 Sheets-Sheet 9 MODULE ,c 1 A ,c BEING o W TESTED TRANSFOQMA T/ON 277/ NETWORK 27 2 75 55 (044m 124 TOR Fzyt Z9 41 40 I m +A1 2 f F249 134 Fly. 18A

MODULE f i Af BEING 755750 TRANSFOQM/J T/ON NETWORK 261 263 FILTER 39 2622 41 2 40 FILTER COMPARATOR Fay 1a Jan. 13, 1970 s. SHAPIRO ET AL 3,490,041

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ECTRONIC FAULT FINDING SYSTEM USING ACCEPTABLE LIMITS TESTING Filed Aug. 28, 1964 24 Sheets-Sheet 12 L MODULE W S BEING TEE TED TRANSFORMATION NETWORK 297 59 55 55 COMPARA T02? K 41 49 40 2 9 6 ERROR PHASE DIFFERENCE (DEGREES) O l Jan. 13, 1970 s. SHAPIRO E L E ECTRONIC FAULT FINDING SYSTEM USING ACCEPTABLE LIMITS TESTING 24 Sheets-Sheet 14 Filed Aug. 28, 1964 Rm @R wa w WUWSQW RZWQQQU WORD mhwQ L QE 33:8

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LECTRONIC FAULT FINDING SYSTEM USING ACCEPTABLE LIMITS TESTING Filed Aug. 28, 1964 24 Sheets-Sheet 17 l\ g 3 g @x E R in 9 g k f Jan. 13, 1970 e. SHAPIRO ETAI- 3,490,041

ECTRONIC FAULT FINDING SYSTEM USING ACCEPTABLE LIMITS TESTING Filed Aug. 28, 1964 24 Sheets-Sheet 18 PAPER!) LL E L TRIGGERED BLOCK/N6 05C IL L A TOR TR A NSFORMA Tl 0N NETWORKS X y g 1 4 15 1e 10 9 12 24 25 T0 TERMINALS 0N SOC/(ET 54 T0 CELL 4 7'0 CELL C Jan. 13, 1970 G. SHAPIRO T AL Filed Aug. 28, 1964 24 Sheets-Sheet 19 VOLTAGE PLUG 51 0 '4 TIME- SAMPLING I I SWITCH 226 I I I I f0 t, TIME I ISAMPLING -INPUT c0MPAIe/s0NINPuT LEVEL LEVEL 1 LEVEL OF I

DETECTORS

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